2025 House Bill 4543 / Public Act 55

Individual income tax: home heating credit; adjustments based on Detroit Consumer Price Index; change to United States Consumer Price Index.

An act to amend 1967 PA 281, entitled “An act to meet deficiencies in state funds by providing for the imposition, levy, computation, collection, assessment, reporting, payment, and enforcement by lien and otherwise of taxes on or measured by net income and on certain commercial, business, and financial activities; to prescribe the manner and time of making reports and paying the taxes, and the functions of public officers and others as to the taxes; to permit the inspection of the records of taxpayers; to provide for interest and penalties on unpaid taxes; to provide exemptions, credits, rebates, and refunds of the taxes; to create certain funds; to provide for the expenditure of certain funds; to impose certain duties and requirements on certain officials, departments, and authorities of this state; to prescribe penalties for the violation of this act; to provide an appropriation; and to repeal acts and parts of acts,” by amending section 527a (MCL 206.527a), as amended by 2022 PA 266.

House Fiscal Agency Analysis

House Bill 4543 would amend the Income Tax Act to change the inflation index used to adjust certain limits on eligibility for the Home Heating Credit. The Home Heating Credit is an income tax credit to assist low-income homeowners and renters with heating expenses. Eligibility for the credit and maximum credit amount depend on the number of income tax exemptions claimed by the taxpayer (i.e., the size of the household) and the total household resources.1 Under the act, the household resource cap and total heating costs that can be reimbursed by the credit (standard allowance) are adjusted annually using the all urban Detroit Consumer Price Index (CPI) for fuels and other utilities, for maximum heating costs, and the Detroit CPI for all items, for the household resources, for the previous calendar year ending August 31.

Introduced in the House

June 3, 2025

Introduced by Rep. Bill Schuette (R-95) and four co-sponsors

Co-sponsored by Reps. Joseph Pavlov (R-64), Denise Mentzer (D-61), Ken Borton (R-105) and Matt Bierlein (R-97)

Referred to the Committee on Economic Competitiveness

Aug. 19, 2025

Discharged from committee

Amendment offered by Rep. Julie Brixie (D-73)

1. Amend page 15, following line 13, by inserting:

“Enacting section 1. This amendatory act does not take effect unless House Resolution No. 142 of the 103rd Legislature is adopted.”.

The amendment failed by voice vote

Passed in the House 88 to 14 (details)

Motion to give immediate effect by Rep. Bryan Posthumus (R-90)

The motion prevailed by voice vote

Received in the Senate

Aug. 26, 2025

Referred to the Committee on Energy and Environment

Dec. 16, 2025

Discharged from committee

Referred to the Committee of the Whole

Reported without amendment

Passed in the Senate 31 to 4 (details)

Motion to give immediate effect by Sen. Sam Singh (D-28)

The motion prevailed by voice vote

Signed by Gov. Gretchen Whitmer

Dec. 23, 2025